The Democrat renewed his push Tuesday for legislation to increase gun crime penalties. He says he'll lobby as much as it'll take ahead of next week's veto session in Springfield.

He's called for the change since last month's shooting at a Chicago park that injured 13 people. Emanuel says one of the shooters involved could have been behind bars instead.

Democratic state Rep. Mike Zalewski has sponsored legislation that would impose a three-year mandatory minimum sentence for aggravated unlawful use of a gun. It'd also require offenders to serve at least 85 percent of their sentences.